Are 32 ACP and 32 Auto ammo the same?

Yes, 32 ACP and 32 Auto refer to the same cartridge. "ACP" stands for "Automatic Colt Pistol," which is a designation used for cartridges designed for semi-automatic pistols. The 32 ACP is widely known as 32 Auto in many regions, including Europe. Both terms describe the same ammunition, featuring a bullet diameter of .312 inches and typically used in compact handguns.